Cultivator



vN A mw M MW BM U B0 \l L B d 0 M 0 N Patented Oct. 28, 1890.

M 'lmawy. 7% f 610%? UNITED STATES PATENT OFFICE.

ELMER E. BLACKMAN, OF RAYMOND, NEBRASKA.

cu LTIVATO R.

SPECIFICATION forming part of Letters Patent No. 439,340, dated October 28, 1890.

Application filed January 9, 1890. Serial No. 336,331. (No model.)

To all whom it may concern.-

Be it known that I, ELMER E. BLACKMAN, a citizen of the United States, residing at Raymond, in the county of Lancaster and State of Nebraska, have invented certain new and useful Improvements in Cultivators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in cultivators; and the object of my improvements is to provide a cultivator that will be simple in its construction and eflicacious in its working. I attain this object by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a side view of my improved cultivator when in operation at first plowing; Fig. 2, a top view of the adjustable side boards of my invention with the shovels thereto attached when in operation for final plowing; Fig. 3, a detailed sectional view of the shovel attachments.

Reference being had to the notations, 1 designates the runners of my improved cultivator, to which are attached the adjustable side boards 2 of my invention by means of the hinges 3. The side boards 2 are designed to hold the cultivator in place while working or while turning when the shovels are thrown out of the ground. To the runners 1 are attached the supporting rods or arches 4 and 5, upon which the frame-board 6 rests. Pivoted to the frame-board 6 at a point over the arch 5 is the evener 7, from each end of which extend downward the evener-rods 8. These evener-rods S are provided with a number of openings, to any of which the singletrees of the cultivator may be attached, according to the required draft.

From the lower ends of the evener-rods 8 extend backward the draft rods or braces 9, hooked by means of the hooks 10 to the adj ustable side boards 2. At this point, also to which are hooked the draft-rods 9, are hooked by means of the hooks 11 the lever-rods 12, connecting the adjustable side boards 2 to the lever 13, pivoted in a slot in the frameboard 6, and held inits required position by means of the ordinary dog and ratchet 15.

16 is the drivers seat supported on the frame-board 6.

To the lower end of the lever 13 are attached the brace-rods 14, which connect at their rearward ends to the brace-shovel castings 17. Bolted to the brace-shovel castings 17 are the shovels 18 and 19 of my invention. I desire to direct particular attention to the shape of the shovels 18 and 19,it being made from one piece of metal that has the suck of an ordinary plow, combining in one piece the mold and lay of the plow. Its shape will be more fully described by describing the manner of making the same, which is as follows: A piece of steel about eight inches wide and three feetlongis out exactly through the center on an angle of forty-five degrees. The slant end of the piece of metal is the front of the shovel, the longest side of the metal being the top of the shovel. from the top of the shovel is made an incision a, about eight inches long. The narrow piece 1), formed by this incision, is then forged up to an angle of forty-five degrees. The shovel thus formed is rolled on a line parallel to the piece forged up, commencing at the lower rear end corner and continuing to the lower edge of the piece forged up, one shovel being rolled to the right and one to the left. Ashovel of this shape possesses the power of drawing itself into the ground, or What is commonly known as suck. In cultivating listed corn the shovel, passing under the ridge, loosens the ground, pulverizes the clods, and destroys the weeds, one shovel acting as a landside tothe other. The shovels are attached to the runners 1 by means of the castings 17, 20, 21, and 22, (shown in detail, Fig. 3,) bolted by bolt 23 and such other bolts as may be necessary.

The cut of the shovels 1S and 19 is regulated by means of the lever 13, Fig. 1. For final plowing the shovels are reversed from one side to the other, as shown in Fig. 2, and are then attached by means of the castings indicated to the adjustable side boards 2. The purpose of this arrangement is to split the ridge and turn the dirt back to the corn.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a cultivator, the combination of the About two inches runners 1, the side boards 2, hinged to the runners, the plows 18 19, connected to the rear ends of the hinged side boards, and a le- Ver to adjust the plows, substantially as described.

2. In a cultivator, the combination of the runners 1, the hinged side boards 2 on the runners, carrying plows on their rear ends, a frame mounted on the runners, an evener on the frame, provided with arms 8, and connecting-rods 9, connecting said arms to the hinged side boards, substantially as and for the purpose specified.

3. In a cultivator, the shovel or plow formed of a single piece of metal curved in crosssection, as shown, and having a narrow piece 1) extending at an angle from the body of the plow, substantially as specified.

4. The shovel herein described, consisting of a sheet of metal curved in cross-section, having one end cut diagonal to the sides and formed with a narrow piece I), struck at an outward angle to the main sheet, substantially as specified.

In witness whereof I hereunto affix my signature in the presence of two witnesses.

ELMER E. BLACKMAN.

Witnesses:

F. D. MoCLUsKY, J. E. DOUGLAS. 

